xxxxxxxxxx<html> <head> <title>Selectable Projection Demo</title> <script src='https://cdn.jsdelivr.net/npm/d3@2.10.3/d3.v2.js'></script> <script src='demo.js'></script> <style>circle { fill-opacity: 0.5;}circle.left { fill: #005982;}circle.right { fill: #971c20;}path.connect { fill: none; stroke-width: 1.2; stroke-opacity: 0.25; stroke: #aaa;} </style> </head> <body> <select id='proj-left'> <option value='albers'>Albers</option> <option value='mercator'>Mercator</option> <option value='stereo'>Stereo</option> <option value='bonne'>Bonne</option> <option value='equirectangular' selected=selected>Equirectangular</option> <option value='ortho'>Orthographic</option> </select> <select id='proj-right'> <option value='albers'>Albers</option> <option value='stereo'>Stereo</option> <option value='bonne'>Bonne</option> <option value='ortho' selected=selected>Orthographic</option> </select> <div id='chart'></div> </ul> </body></html> Modified http://mbostock.github.com/d3/d3.v2.js to a secure url
https://mbostock.github.com/d3/d3.v2.js